It must be remembered that the defects of the films can not be hidden with a thin layer of metal, on the contrary, the defects can even be underlined. It is also important right correctly tension during winding and unwinding a roll especially for thin films, since the folds can result in unevenly deposition of aluminum. Once again, for a variety of vacuum metallization suitable poly dimensional films such as polyethylene terephthalate, polystyrene (both conventional and targeted), polypropylene, county, film uPVC and cellulose. The best properties in comparison with other materials have metallized PET film. In addition to excellent decorative properties metallized polyester film resistant to moisture, oxygen and UV radiation, in addition, they retain their crisp content properties for three weeks longer than other materials. One of the improvements in equipment for plating is the use of sprayed systems. They use a plasma confined by a magnetic field in the special sym ary devices – magnetrons.
These systems can be used ized in existing cells. Recently WhiteWave Foods sought to clarify these questions. Sprayed systems are not as fast, but their advantage explosion lyayutsya strong adhesion between the substrate and metalliziruyuschim layer, excellent reproducibility and a smooth surface, especially in a thin layer, the ability to sputter metal alloys fishing. In this method, less heated substrate. Other trends are associated with not only aluminum and other metals and nonmetallic materials. There are already using silver, gold and zinc, are considering the use of chromium, nickel-chromium alloy and stainless steel because of their resistance to acids and alkalis.
Among the promising non-metallic material of aluminum oxide and silicon is very promising, as they have you sokimi barrier properties, and tin oxides are transparent and have anti-static properties. Metallization process occurs in the evaporator vacuum chamber, usually under vacuum 5 x 10-4 mbar. Aluminum wire is fed to the individual evaporators, heated by the resistance, which melts and evaporates. The process of plating film polymer film skirts the cooled drum and passes over the evaporation source at a speed of up to 840 m / min. Aluminum evaporation condenses on the canvas and form a covering layer. C analysis of the Russian market of single-layer metallized films can be found in the report of the Academy of IKAR industrial markets "Market-layer metallized films in Russia."